Fig. 2
From: Coupling process of carbon sink service flow based on metacoupling framework
Map of the study area. (a) Study area (This map depicted in the figure was generated by the authors using ArcGIS 10.4 (Esri, URL: https://www.esri.com/en-us/arcgis/products/arcgis-desktop/overview) and does not require any license). (b) The four subsystems of this paper.
